126752domain: NAppears in sequencesSalié numbers: expansion of cosh x / cos x = Sum_{n >= 0} a(n)*x^(2n)/(2n)!.at n=5A000795Expansion of e.g.f. exp(x)/cos(x).at n=10A003701Boustrophedon transform of (n+1) mod 2.at n=10A062272p-INVERT of the tribonacci numbers (A000073(k), k>=2), where p(S) = 1 - S - S^2 - S^3.at n=10A292397